<template>
    <Dialog title="修改用户积分" v-model="dialogVisible" width="600">
        <el-form
            ref="formRef"
            :model="formData"
            :rules="formRules"
            label-width="100px"
            v-loading="formLoading"
        >
            <el-form-item label="用户编号" prop="id">
                <el-input v-model="formData.id" class="!w-240px" disabled />
            </el-form-item>
            <el-form-item label="用户昵称" prop="nickname">
                <el-input v-model="formData.nickname" class="!w-240px" disabled />
            </el-form-item>
            <el-form-item label="变动前积分" prop="point">
                <el-input-number v-model="formData.point" class="!w-240px" disabled />
            </el-form-item>
            <el-form-item label="变动类型" prop="changeType">
                <el-radio-group v-model="formData.changeType">
                    <el-radio :label="1">增加</el-radio>
                    <el-radio :label="-1">减少</el-radio>
                </el-radio-group>
            </el-form-item>
            <el-form-item label="变动积分" prop="changePoint">
                <el-input-number v-model="formData.changePoint" class="!w-240px" :min="0" :precision="0" />
            </el-form-item>
            <el-form-item label="变动后积分">
                <el-input-number v-model="pointResult" class="!w-240px" disabled />
            </el-form-item>
        </el-form>
        <template #footer>
            <el-button @click="submitForm" type="primary" :disabled="formLoading">确 定</el-button>
            <el-button @click="dialogVisible = false">取 消</el-button>
        </template>
    </Dialog>
</template>
<script setup lang="ts">
import * as UserApi from '@/api/member/user'

/** 修改用户积分表单 */
defineOptions({ name: 'UpdatePointForm' })

const { t } = useI18n() // 国际化
const message = useMessage() // 消息弹窗

const dialogVisible = ref(false) // 弹窗的是否展示
const formLoading = ref(false) // 表单的加载中：1）修改时的数据加载；2）提交的按钮禁用
const formData = ref({
    id: undefined,
    nickname: undefined,
    point: 0,
    changePoint: 0,
    changeType: 1
})
const formRules = reactive({
    changePoint: [{ required: true, message: '变动积分不能为空', trigger: 'blur' }]
})
const formRef = ref() // 表单 Ref

/** 打开弹窗 */
const open = async (id?: number) => {
    dialogVisible.value = true
    resetForm()
    // 修改时，设置数据
    if (id) {
        formLoading.value = true
        try {
            formData.value = await UserApi.getUser(id)
            formData.value.changeType = 1 // 默认增加积分
            formData.value.changePoint = 0 // 变动积分默认0
        } finally {
            formLoading.value = false
        }
    }
}
defineExpose({ open }) // 提供 open 方法，用于打开弹窗

/** 提交表单 */
const emit = defineEmits(['success']) // 定义 success 事件，用于操作成功后的回调
const submitForm = async () => {
    // 校验表单
    if (!formRef) return
    const valid = await formRef.value.validate()
    if (!valid) return

    if (formData.value.changePoint < 1) {
        message.error('变动积分不能小于 1')
        return
    }
    if (pointResult.value < 0) {
        message.error('变动后的积分不能小于 0')
        return
    }

    // 提交请求
    formLoading.value = true
    try {
        await UserApi.updateUserPoint({
            id: formData.value.id,
            point: formData.value.changePoint * formData.value.changeType
        })

        message.success(t('common.updateSuccess'))
        dialogVisible.value = false
        // 发送操作成功的事件
        emit('success')
    } finally {
        formLoading.value = false
    }
}

/** 重置表单 */
const resetForm = () => {
    formData.value = {
        id: undefined,
        nickname: undefined,
        levelId: undefined,
        reason: undefined
    }
    formRef.value?.resetFields()
}

/** 变动后的积分 */
const pointResult = computed(
    () => formData.value.point + formData.value.changePoint * formData.value.changeType
)
</script>
